1663 backend developer English-speaking jobs in Warsaw

Fullstack Gen AI Developer At Capgemini Invent, we believe difference drives change. ... Develop and maintain both frontend interfaces (React, Next.js, etc.) and backend systems (Python, Node.js ... Integrate foundation models and APIs (OpenAI, Anthropic, Hugging Face, Stability, etc.) into robust backend ... AI‑powered web applications. 2+ years of experience in software development, covering both frontend and backend

moving from legacy patterns to modern architecture Strong background in platform engineering, developer ... The backend and frontend architecture becomes more modular, maintainable, and extensible. ... Deep expertise in Python backend development, with modern frameworks and best practices for scalable ... Lead system‑level design for backend services (Python), frontend architecture (Angular), APIs and integrations

developer frontend developer devOps automated test programmer UI designer UX designer This is how we ... solutions applied you have influence on the product you focus on product development agile Team members backend ... initiatives Collaborating with other engineering teams and Product Our requirements 3 years experience in backend

Code) to improve developer experience and delivery velocity. ... About the position As a Senior Java Backend Engineer within Advanced Analytics in the Chief Data & AI ... Proactive learner with pragmatic adoption of AI-assisted developer tools (e.g., GitHub Copilot, Claude ... Required Experience & Skills 5 years professional backend engineering experience with Java in production

Building and maintaining features within the SaaS application Requirements 2–4 years of experience in backend ... We are looking for a Mid-level Java Developer to join our client’s engineering team and support the development ... hours Participate in regular team meetings and virtual team events Integrate with the client’s wider developer

You’ll be hands-on with frontend and backend development across our React/TypeScript and NestJS/Node.js ... Leverage new and cutting-edge developer tools to enhance productivity and code quality. ... Role Overview As a Senior Software Engineer, you will serve as a senior full-stack developer for our

This is a fully remote backend Java development role for a developer in Poland . ... The Role at a Glance Senior Java Backend Engineer Fully remote for a top N. ... Are you a passionate Java developer who thrives on solving complex problems in low-latency, high-throughput ... the core team - this is not a legacy support role or an outsourced B team We’re hiring experienced backend

We are looking for a Senior Full Stack Developer with strong architectural mindset for our client, one ... Responsibilities Take ownership of solution design and support architectural decisions across frontend and backend

You’ll revamp and evolve existing tools and services so they integrate cleanly into developer workflows ... All roles share a strong focus on building high‑impact, user‑facing products and scalable backend services ... Enablement Apps (POSA & DeCap) The Enablement Apps group builds the applications and backend services ... Solid experience with backend development (e.g., Node.js, JVM - Java/Scala/Kotlin, Python, Go, C#, or ... You’ll enhance and maintain core applications and backend services that support our payment and device

Full Stack Developer will involve developing and enhancing a platform designed for conducting language ... must, but other technologies like RabbitMQ and Kafka will also be considered Strong Junit knowledge Backend

we work in house you focus on product development you focus on code maintenance agile Team members backend ... C# Developer for MS365 Miejsce pracy: Warszawa Technologies we use Expected SaaS solutions C# .NET 8 ... developer automated test programmer manual tester project manager business analyst system analyst This ... Oracle PostgreSQL Operating system Windows Linux About the project We are looking for a Middle/Senior C# Developer

Your work will directly influence system performance, scalability, and the overall developer and user ... Experience profiling backend/database-heavy systems in production. ... Required Skills Expert-level C# / .NET backend engineering. Strong database design experience. ... query performance by identifying inefficiencies in traversal, filtering, projection, aggregation, and backend ... includes optimizing how data is traversed, filtered, aggregated, and executed, with a strong awareness of backend

Preferred Qualifications Experience with MCP or similar agent-to-service protocols Background in developer ... controls, audit logging, and observability What You Bring 6+ years of experience building APIs and backend ... Experience with authentication systems (OAuth 2.0, OIDC) Track record of wrapping and aggregating multiple backend

React.js JavaScript technologies-optional : OpenShift Kubernetes about-project : As a React Developer ... platforms Implement and integrate AI-powered features into web terminal UI Collaborate closely with backend ... of complex, data-driven frontend architectures and state management Experience working closely with backend

security of applications at all times requirements-expected : Minimum 5 years of experience as a Java developer ... services Implement and optimize frontend and backend code for performance and scalability, ensuring ... robust RESTful APIs with Java and Spring technologies, ensuring smooth data flow between front and backend

Role Overview As a Frontend Developer , you will play a key role in designing and building the userfacing ... You’ll work closely with product, design, and backend teams to translate intricate workflows into simple ... Work closely with backend engineers to integrate GraphQL APIs and ensure efficient data loading and clientside

We are looking for a Mid-Level Developer who enjoys solving problems, thinking algorithmically, and isn ... problems and seek the simplest effective solutions Openness to working across technologies (frontend, backend

Developer Platform Enablement Provide tooling and automation that improves the developer experience on ... Developer Platform Enablement Provide tooling and automation that improves the developer experience on ... Enable efficient deployment of AI services, backend components, and platform updates. ... Enable efficient deployment of AI services, backend components, and platform updates.

Full Stack Developer (PythonVue) We are seeking a Full Stack Developer for a global life‑science company ... Work mode : 100% remote Tasks Develop and maintain scalable frontend and backend components using Vue.js

Our Tech Stack Backend: KeystoneJS 6, Node.js, PostgreSQL 16, Redis, Prisma ORM. ... Build developer tools and automation workflows. Create comprehensive analytics dashboards.